209 lines
6.4 KiB
C
209 lines
6.4 KiB
C
/*
|
|
* Copyright (c) 2010, Swedish Institute of Computer Science.
|
|
* Copyright (c) 2011, STMicroelectronics.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Light and temperature sensor web demo
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
#include "httpd-simple.h"
|
|
#include "webserver-nogui.h"
|
|
#include "dev/temperature-sensor.h"
|
|
#include "dev/acc-sensor.h"
|
|
#include "dev/leds.h"
|
|
#include <stdio.h>
|
|
|
|
PROCESS(web_sense_process, "Sense Web Demo");
|
|
|
|
AUTOSTART_PROCESSES(&web_sense_process);
|
|
|
|
#define HISTORY 11
|
|
#define INTERV 5
|
|
static int temperature[HISTORY];
|
|
static int acc_x[HISTORY], acc_y[HISTORY], acc_z[HISTORY];
|
|
static int sensors_pos;
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static const char *TOP = "<html><head><title>Contiki Web Sense</title></head><body>\n";
|
|
static const char *BOTTOM_HOME = "<br><br><a href=\"0\">Turn off leds</a><br><a href=\"1\">Turn on leds</a></body></html>\n";
|
|
static const char *BOTTOM = "<br><br><a href=\"index\">Home</a></body></html>\n";
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Only one single request at time */
|
|
static char buf[256];
|
|
static int blen;
|
|
#define ADD(...) do { \
|
|
blen += snprintf(&buf[blen], sizeof(buf) - blen, __VA_ARGS__); \
|
|
} while(0)
|
|
static void
|
|
generate_chart(const char *title, const char *unit, int min, int max, int *values)
|
|
{
|
|
int i;
|
|
blen = 0;
|
|
ADD("<h1>%s</h1>\n"
|
|
"<img src=\"http://chart.apis.google.com/chart?"
|
|
"cht=lc&chs=400x300&chxt=x,x,y,y&chxp=1,50|3,50&"
|
|
"chxr=2,%d,%d|0,0,%u&chds=%d,%d&chxl=1:|Time|3:|%s&chd=t:",
|
|
title, min, max, (HISTORY-1)*INTERV, min, max, unit);
|
|
for(i = 0; i < HISTORY; i++) {
|
|
ADD("%s%d", i > 0 ? "," : "", values[(sensors_pos + i) % HISTORY]);
|
|
}
|
|
ADD("\">");
|
|
}
|
|
static void
|
|
start_acc_chart(const char *title, const char *unit, int min, int max)
|
|
{
|
|
blen = 0;
|
|
ADD("<h1>%s</h1>\n"
|
|
"<img src=\"http://chart.apis.google.com/chart?"
|
|
"cht=lc&chs=400x300&chxt=x,x,y,y&chxp=1,50|3,50&"
|
|
"chco=FF0000,008000,224499&"
|
|
"chdl=X|Y|Z&"
|
|
"chxr=2,%d,%d|0,0,%u&chds=%d,%d&chxl=1:|Time|3:|%s&chd=t:",
|
|
title, min, max,(HISTORY-1)*INTERV, min, max, unit);
|
|
}
|
|
|
|
static void
|
|
add_chart_values(int *values)
|
|
{
|
|
int i;
|
|
for(i = 0; i < HISTORY; i++) {
|
|
ADD("%s%d", i > 0 ? "," : "", values[(sensors_pos + i) % HISTORY]);
|
|
}
|
|
}
|
|
|
|
static void
|
|
end_acc_chart()
|
|
{
|
|
ADD("\">");
|
|
}
|
|
|
|
static
|
|
PT_THREAD(send_values(struct httpd_state *s))
|
|
{
|
|
|
|
PSOCK_BEGIN(&s->sout);
|
|
|
|
SEND_STRING(&s->sout, TOP);
|
|
|
|
if(strncmp(s->filename, "/index", 6) == 0 ||
|
|
s->filename[1] == '\0') {
|
|
/* Default page: show latest sensor values as text (does not
|
|
require Internet connection to Google for charts). */
|
|
blen = 0;
|
|
ADD("<h1>Current readings</h1>\n"
|
|
"<a href=\"a\">Acceleration</a>: (%d, %d, %d) mg<br>"
|
|
"<a href=\"t\">Temperature</a>: %u° C",
|
|
acc_sensor.value(ACC_X_AXIS),
|
|
acc_sensor.value(ACC_Y_AXIS),
|
|
acc_sensor.value(ACC_Z_AXIS),
|
|
temperature_sensor.value(0)/10);
|
|
SEND_STRING(&s->sout, buf);
|
|
|
|
SEND_STRING(&s->sout, BOTTOM_HOME);
|
|
|
|
|
|
} else if(s->filename[1] == '0') {
|
|
/* Turn off leds */
|
|
leds_off(LEDS_ALL);
|
|
SEND_STRING(&s->sout, "Turned off leds!");
|
|
|
|
SEND_STRING(&s->sout, BOTTOM);
|
|
|
|
} else if(s->filename[1] == '1') {
|
|
/* Turn on leds */
|
|
leds_on(LEDS_ALL);
|
|
SEND_STRING(&s->sout, "Turned on leds!");
|
|
|
|
SEND_STRING(&s->sout, BOTTOM);
|
|
|
|
} else {
|
|
if(s->filename[1] != 't') {
|
|
start_acc_chart("Acceleration", "mg", -1100, 1100);
|
|
SEND_STRING(&s->sout, buf);
|
|
blen=0;
|
|
add_chart_values(acc_x);
|
|
ADD("|");
|
|
SEND_STRING(&s->sout, buf);
|
|
blen=0;
|
|
add_chart_values(acc_y);
|
|
ADD("|");
|
|
SEND_STRING(&s->sout, buf);
|
|
blen=0;
|
|
add_chart_values(acc_z);
|
|
end_acc_chart();
|
|
SEND_STRING(&s->sout, buf);
|
|
|
|
}
|
|
if(s->filename[1] != 'a') {
|
|
generate_chart("Temperature", "Celsius", 10, 50, temperature);
|
|
SEND_STRING(&s->sout, buf);
|
|
}
|
|
|
|
SEND_STRING(&s->sout, BOTTOM);
|
|
}
|
|
|
|
PSOCK_END(&s->sout);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
httpd_simple_script_t
|
|
httpd_simple_get_script(const char *name)
|
|
{
|
|
return send_values;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
PROCESS_THREAD(web_sense_process, ev, data)
|
|
{
|
|
static struct etimer timer;
|
|
PROCESS_BEGIN();
|
|
|
|
sensors_pos = 0;
|
|
process_start(&webserver_nogui_process, NULL);
|
|
|
|
etimer_set(&timer, CLOCK_SECOND * INTERV);
|
|
SENSORS_ACTIVATE(acc_sensor);
|
|
|
|
while(1) {
|
|
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timer));
|
|
etimer_reset(&timer);
|
|
|
|
acc_x[sensors_pos] = acc_sensor.value(ACC_X_AXIS);
|
|
acc_y[sensors_pos] = acc_sensor.value(ACC_Y_AXIS);
|
|
acc_z[sensors_pos] = acc_sensor.value(ACC_Z_AXIS);
|
|
temperature[sensors_pos] = temperature_sensor.value(0)/10;
|
|
sensors_pos = (sensors_pos + 1) % HISTORY;
|
|
}
|
|
|
|
PROCESS_END();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|